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105: Would a seasonally low vitamin D intake and high calcium intake cause soft tissue calcification?

Masterjohn Q&A Files Episode 105


Chris: The end of this question is would the calcium simply be excreted due to the low vitamin D levels. Your vitamin D level being low, the first thing that's going to do and the major thing that's going to do is it's going to lower your calcium absorption. You would have more calcium excreted in the feces as a result of not absorbing it if your vitamin D level is low. However, a high enough calcium intake is going to more than compensate for that. It depends how low it is. If you live in northern Michigan and you're not supplementing with vitamin D in the winter, but you're outdoors a lot, your vitamin D is probably not going like rickets level low. It's probably dipping a bit. A calcium intake of 2,000 milligrams is so high that you're probably absorbing at least enough calcium.

This Q&A can also be found as part of a much longer episode, here: 

Harnessing the Power of Nutrients
050: Ask Us Anything About Hormones with Dr. Carrie Jones | May 10, 2019
Watch now (125 min) | On May 10, members of the CMJ Masterpass joined me and Dr. Carrie Jones in a live Zoom meeting to ask us anything about hormones, and here’s the full recording! We talk about things like: What time of day is best to take T4 and/or T3? How to use pregnenolone to manage perimenopausal insomnia…
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DISCLAIMER: I have a PhD in Nutritional Sciences and my expertise is in performing and evaluating nutritional research. I am not a medical doctor and nothing herein is medical advice.

PLEASE NOTE: As a result of the COVID-19 crisis and the time I am committing to staying on top of relevant research, as well as the high volume of questions I receive, it may take me extra time to respond to questions here. For an up-to-date list of where I respond to questions most quickly, please see the contact page on

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The Masterjohn Q&A Files
We use Zoom, a video chatting software, in webinar mode. You can ask your question anonymously in text, but you can also ask it publicly, and you can even get "on stage" and share your mic, web cam, or screen with everyone.
Chris Masterjohn, PhD